Home / 1,977.94-2,969.34-1,899.64

Finding the Fourth Proportional to 1,977.94, 2,969.34 and 1,899.64

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Solution

The fourth proportional to 1,977.94, 2,969.34 and 1,899.64 is: 2,851.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,977.94 : 2,969.34 = 1,899.64 : x
  2. Step 2: Convert to fraction form
    1,977.94/2,969.34 = 1,899.64/x
  3. Step 3: Cross multiply
    1,977.94x = 2,969.34 × 1,899.64
  4. Step 4: Simplify right side
    1,977.94x = 5,640,677.04
  5. Step 5: Solve for x
    x = 5,640,677.04/1,977.94
  6. Step 6: Final answer
    x = 2,851.79

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.